VulnSocial

CVE-2026-4748Disclosure(freebsd / freebsd)

LOWCVSS 7.5 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

A regression in the way hashes were calculated caused rules containing the address range syntax (x.x.x.x - y.y.y.y) that only differ in the address range(s) involved to be silently dropped as duplicates. Only the first of such rules is actually loaded into pf. Ranges expressed using the address[/mask-bits] syntax were not affected. Some keywords representing actions taken on a packet-matching rule, such as 'log', 'return tll', or 'dnpipe', may suffer from the same issue. It is unlikely that users have such configurations, as these rules would always be redundant. Affected rules are silently ignored, which can lead to unexpected behaviour including over- and underblocking.

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0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-480CWE-754CWE-1023

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • freebsd

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
freebsd
Products
freebsd

3 versions affected across 1 product

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-04-01: 2Technical Details · 2026-04-01: 104-01
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-4748 A regression in the way hashes were calculated caused rules containing the address range syntax (x.x.x.x - y.y.y.y) that only differ in the address range(s) involved to… https://www.cve.org/CVERecord?id=CVE-2026-4748

    Post summary

    The post announces CVE-2026-4748, describing a hash calculation regression that impacts rules using address ranges; it provides a brief technical detail but lacks evidence of exploitation or mitigation steps.

    0000083
    56.9K followersView on X
  • CyberDudeBivash® | Global Cybersecurity Company@cyberbivash
    General

    🚨 CYBERDUDEBIVASH SENTINEL APEX ALERT 🚨 Threat: CVE-2026-4748 - pf silently ignores certain rules Intel Report: https://ift.tt/mdLREGO

    Post summary

    The tweet highlights CVE‑2026‑4748 and points to an Intel report but provides no PoC, exploit code, patch details, or in‑depth technical information.

    0000035
    281 followersView on X
CPE platform detail18 entries

18 of 18 entries

PartVendorProductVersionTarget SWTarget HW
OSfreebsdfreebsd---
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.4--
OSfreebsdfreebsd14.4--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--

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